— 290 — 



H. Sellers Colton. On Classification in General and the 

 Genus Lymnsea in Particular. — H. Sellers Colton. A Pro- 

 visional Key to the Subgenera and Species of North American 

 Lymnoeids. 



Vril. XXVITI, n° 11, Mardi 1015. 



Contents : Bryant Walkeh. On Paludina coarctata and 

 incrassntn Lea [Camp ioma Lcvnsii n, n. = Melantho coarc- 

 tata Binney]. — Geo H. Glapp. Polygyra inflecta mobilensis 

 n. var. — Wm. TI. Dall. The Earliest Notice of a Species of 

 Guudiachia. — A. E. Ortmann. Studies in Najades (continued). 

 ~ Notes : C. \V. Johnson, Hclix hortensis froni a Maine Shell 

 Ileap ; ^ G. H. Clapp, CsecUioidcs Gundlachi Pfr. in Florida ; 

 — G. H. Clapp, Buiimnhis Schicdeanns Pfr. in Texas ; — 

 W. F. Clai'I', Mviparous [rocoplidcr ; — H. A. Pilsbry, 

 Gundlaclùa or Navicetla ? 



Vol. XXVHI, n" 1.2, April li»15. 



Contents : Chas. T. Ramsden. On some New Cuban Land 

 Shells [Urocoptis {Arangia) scobinata Torre et Ramsden 

 n. sp., Diplopoma Torrei n. sp.] (PL \T). — J. B. IIe.nderso.n. 

 Microcevarrius longus n. sp. [Cuba]. — Geo. H. Clapp. Des- 

 cription of a New Species of Vertigo, with Notes on other 

 Forms [V. alabainonsis n. sp. et subsp. conecu/icjisi^ n. subsp., 

 .\labama] (PL \T). — Wm. H. Hall. A New Species nf Modio- 

 taria hmn Bering Sea [Musculus phenax n. sp.]. — Wm. G. 

 Mazyck. Oliva lUterata Lamarck. — Bryant W'alker. Plru- 

 robcma juissuurionsis Marsh. — ^ A. E. Ortmann. Studies in 

 Najades. — Notes : E. G. Vanaita, (hmidea augulata Lea ; — 

 E. P. Chace, a Repaired ShclL 



V(.L XXTX, n" 1, May l'Jlo. 



Contents : II. A. Ph.sbrv. Tlie Japanese species of IHan- 

 fordia. — Arthi it 1). Howard. Some exccplional cases of 

 breeding among the Unionidse. — The Dall Banquet. 



